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M. Angela Sasseger relationship was found between real GDP growth and the number of people infected with COVID-19. States are forming a policy of minimizing the consequences and confronting the pandemic based on available resources. The problem of assessing the impact of the pandemic on their international competi

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High Temperature Resistance and Low-Cost Fracturing Fluid System,ely in 2?h and the viscosity of the gel breaker is less than 10?mPa·s. The fracturing fluid has a wide application prospect in the fracturing stimulation of reservoirs in high temperature and deep wells which can hardly be fractured.

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H. Stüdemann,R. Beuchies. Composition hierarchies seem a natural and straightforward focus for our exploration. What are model components and the requirements for a composite approach? How far do they support the quest for building blocks in computational biology? Modeling formalisms provide different means for compos

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